Monel 400 UNS N04400 Bar / Seamless tube/ Wire/ flange

Product Detail

Common Trade Names: Monel alloy 400 ,alloy 400,Monel nickel-copper alloy 400 ,UNS N04400,W.Nr. 2.4360

Monel400  is a nickel-copper solid solution strengthened alloy. The alloy is characterized by moderate strength, good weldability, good general corrosion resistance and toughness. It is useful at temperatures up to 1000°F (538°C). Alloy 400 has excellent resistance to rapidly flowing brackish or seawater where cavitation and erosion resistance is necessary. It is particularly resistant to hydrochloric and hydrofluoric acids when they are de-aerated. Alloy 400 is slightly magnetic at room temperature.

Monel 400 Chemical Composition









Monel 400


 63  -  -  -  - -  28.0




 0.3  2.0  0.5  0.24  34.0
Monel 400 Physical Properties
8.83 g/cm³
Melting point
1300-1390 ℃
Monel 400 Typical Mechanical Properties
Tensile strength 
Rm N/mm²
Yield strength 
Rp 0. 2N/mm²
As %
Brinell hardness
Solution treatment
 170  35 135 -179


Monel 400  Standards and Specifications

ASTM B127/ASME SB-127, ASTM B163/ASME SB-163, ASTM B165/ASME SB-165

Bar/Rod Forging  Strip/Coil Sheet/Plate Pipe/Tube
ASTM B164 ASTM B564   ASTM B127  ASTM B163/ASME SB-163, ASTM B165/ASME SB-165 

Monel 400 Available Products in Sekonic Metals

Inconel 718 bar,inconel 625 bar

Monel 400 Bars & Rods

Round bars/Flat bars/Hex bars,     Size From 8.0mm-320mm, Used for bolts,fastners and other spare parts

welding wire and spring wire

Monel 400 Wire

Supply in welding wire and spring wire in coil form and cut length.

Sheet & Plate

Monel 400 sheet & plate

Widths up to 1500mm and lengths up to 6000mm,Thickness from 0.1mm  to 100mm.

Monel 400 seamless tube & Welded pipe

Standards size and  customized dimension can be produced by us with small tolerance

inconel strip,invar stirp,kovar stirp

Monel 400 strip & coil

Soft condition and hard condition with AB bright surface, width up to 1000mm

Fasterner & Other Fitting

Monel 400 Fasteners

Monel 400 materials  in forms of Bolts,screws,flanges and other fasterners, according to clients specification.

Why Monel 400 ?

Resistant to seawater and steam at high temperatures
Excellent resistance to rapidly flowing brackish water or seawater
Excellent resistance to stress corrosion cracking in most freshwaters
Particularly resistant to hydrochloric and hydrofluoric acids when they are de-aerated
Offers some resistance to hydrochloric and sulfuric acids at modest temperatures and concentrations, but is seldom the material of choice for these acids
Excellent resistance to neutral and alkaline salt
Resistance to chloride induced stress corrosion cracking
Good mechanical properties from sub-zero temperatures up to 1020° F
High resistance to alkalis

Monel 400 Application field:

Marine engineering
Chemical and hydrocarbon processing equipment
Gasoline and freshwater tanks
Crude petroleum stills
De-aerating heaters
Boiler feed water heaters and other heat exchangers
Valves, pumps, shafts, fittings, and fasteners
Industrial heat exchangers
Chlorinated solvents
Crude oil distillation towers

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